Fountain writing instrument



F. MAH K 1,857,027

y FOUNTAIN WRITING INSTRUMENT May 3, 1932.

Filed May 20, 1929 lNvENToR, v 'f7/Mh 7nd BY 09 i f TTDRNEY Patented May u 3, 1932 FRANK MAH, or vANCoUvEn, BRITISH COLUMBIA, CANADA' FQUNTAIN WRITING INSTRUMENT Application inea may 2o, 1929. Serin No. 364,502.

The invention relates to a fountain writing instrument as described in the present speci-- to avoid leakage andoverflow of the writing fluid through the bristles to eliminate the malformation of the characters incidentalto some forms of implements in use; to furnish a pen for that particular form of penmanship that shall be the equivalent of the fountain pens used in American, `British and European styles of calligraphy; to construct a brush of the fountain type which will bev found useful in other arts and generally to provide at moderate cost a fountain brush 25 efficient and serviceable in use as well as durable in regard to its maintenance properties.

In the drawings Figure 1 is a vertical sectional view of the invention.

Figure 2 is an enlarged elevational view of the sleeve supporting the plug.

Figure 3 is the half elevational view right and the half sectional view left of the inner plug and ferrule.

Figure 4 is a sectional view of the end of the inner plug.

Figure 5 is the half elevational view right and the half sectional view left of the outer case of the fountain brush pen.

Figure 6 is a fragmentary sectional view of the brush.

Figure 7 is a cross sectional view on the line A-A in Figure 1.

Like numerals of reference indicate cor- 45 responding parts in the various figures.

Referring to the drawings, the instrument casing is indicated by the numeral 10 and is of the usual barrel form containing thefrubber bulb. reservoir 11 for the ink, indicated by the numeral 29.

1 cess for theback 19 of the brush 18,'the brisandA contacts withthe ribs'24and is Vprefupwardly into the space between4 the ring 26 o The lever 13 of conventional form infoune tain pensoperat-es the compressor plate 14.A

The flanged ring 15 yis inserted in the'open end of the barrelcasing 10jand the perfof rated plug 16-is introducedin said flanged ring forming therebetween the-.fluid channel 17 at one side of the plug.

The bulb 11 is clamped between the barrel 10 and the flanged ring 15, therefore the inkis free to pass in and out of the reservoir through the communicatingpassage 17 that 1s to say5 in an empty reservoir, by-operating the lever 13, the ink from an `ink wellY may be sucked into the reservoir 11-and when said reservoir is charged, the ink is free to flow downwardly through said passage 17.

The ring or ferrule 12 is firmly secured to the outer'end of the plug 16 and forms a retles`20 being securely setin said back by any 7' o of the most suitable processes used in brush making.

The brush back -19 is firmly held in its recess by friction .with the ring 12and the bristles 200i the Abrushy 18 are trained to a 75.' Y'

point. n

VThe sleeve 22 of frusta-conical form is screwedon to thethread ofv the flanged ring 15. and extends outwardly, and encirfy cles the brush, and is formed with the vertical ribs 24 or corrugations, theseribs projecting inwardly. 1 f

` The' inner4 sleeve 23 is also of frusta-'conical form and encircles Athe bristles 20 withinthe encircling sleeve 22, and Ndirectly engages and pressesV 0n the bristles bulging from the back 19 thereby training saidbristlesfto a point as aforesaid.` Y The inner lsleeve 23 fits in the outer sleeve erably soldered thereto forming with `said sleeve 22 filling openings through which the ink may ow on being drawn into the reservoir. j

The ring or ferrule 26 isinserted in the flanged ringf15 at the vother Aend and'exten'ds therefrom below the plug 16 and forms an inksealor trap, this ink seal or trap being made bv the projection ofthelinner sleeve and the sleeve 22, consequently this trap insures a tortuous passage for the lling ink flow through the passages 28 to the passage 17 and to the reservoir. Consequently after the charging of the reservoir, the ink cannot nd itsvway past the trap thus formed, but on the other hand the ink .may collect in the` annular space 29A surrounding the bristles and form a constant supply or ink magazine for the feeding of the brush andit may be pointed out herein that this brushis fed fromf the outside of the bunch of bristles and not from the centre as is the common practice.

A ferrule 26 is fitted-around the inside of the lower portion of the plug 15 and extends therebelow the upper rim of v'the sleeve 23 little above the `ferrule 12 of the plug 16, so that ferrule 12 is projecting below ferrule 26 to allow clearance for brush '20 to expand and to'provide space to form the sub-reservoir 29A. v The ink descending through the usual channel 17 from tube 11 is thus directed into the sleeve 23 to collect as at 29A, forming in effect a sub-reservoir for the ink and resulting in an adequately saturated'` brush 18, with which the ring` 26 projects below the upper rim of the sleeve v23 as just explained. The descending ink cannot fall into the channels 28 which are formed by the ridges'24 to ultimately leak out even when the device isappreciably tilted, and as the level of the ink in the sub-reservoir rises .to the level of the lowen rim of the ferrule 26, any air which would usually flow up rthrough -the channelv 17 to allow the ink in the tubell-to descend, finds ing a casing containing an ink reservoir having a plug at its open end and outlet there# through from the reservoir, and a flanged ring supporting said plug and reservoir, a brush receptacle engaging the lower portion of the securing the plug to the casing, an outer rusta=conica1 sleeve secured to said ring and adjustable thereon and supporting an inner frusta-.conical .sleeve engaging a brushV receptacle held adjacent to the plug and bristlesy projecting therefrom and tapered tothe required point by `said inner and outer sleeves.

1. In'a fountain writing instrument, a bar releasing, a compres'sible reservoir therein and` a brush head and brush head mounting closing said reservoir having aside inlet and outlet passage, tapered double ring sleeves having spacing corrugations forming fluid passages, 4the inner sleeve extending upwardly to direct the .inward ow, said brush being trained to apoint by :said rings. Y Y

Signedatfthe city of Vancouver, this 30th day of March, 1929. Y

c Y FRANK MAH.

itself cut off and the downward flow of the 'A ink is checked.

It will thus be observed that as the sleeve 22 andtherefore 'sleeve are VjoinedV with one another by the ridges 24. so that the inner frusta-conical sleeve will hold the bristles 20 and draw the bristles to a point at 18 and that the brushcan be compressedor allowed t-oexpand where engaged by the sleeve 28, to effect the width of the mark. A cap 27 is provided as usual to seal the de-y vice when not used'. The sleeve 22 and sleeve 23can be modified as shown in Figure 5 indicated here by numeral 23 having slanted portions tov uniformly engage the brush to the point'18. n 1

' What I claim is:

1. A fountain writing instrument comprising a barrel casing, a compressible reservoirv contained within said casing, Va stopper having a side outlet and finlet passage therethrough and an encircling sleeve forming a binder for securing said compressible reser# voir to the stopper, a bunch of bristles secured in a back-and firmly held to said stopper beside said passage and a tapered sleeve iiXedly secured and embracing said bunch of bristles and extending upwardly to directthe flow in filling thereservoir.

2. A fountain Writing instrument compris- 

